The German cockroach is probably the most economically important pest. It is the most common cockroach you will find in a home or business. The German cockroach can be found in homes, apartments, hotels, motels, restaurants and other places throughout Ontario. There are other cockroaches that might be found more in other areas but the German cockroach is by far the most common species infesting homes and other areas.
Cockroaches can survive on very little carbohyderate food. But they must be able to maintain their body moisture. That’s why they live in tight spaces where the air hardly moves.
Appearance of German Cockroaches
The adults are about 1/2 to 5/8 inches long and have two dark stripes. Both sexes have wings but do not fly. Males can be distinguished from females by a tapering shape of the abdomen.
German cockroach babies, called nymphs, look like adults except they are smaller, have no wings and are darker in color, sometimes even black. One stripe running down the middle of the back is a prominent marking of the younger German cockroach nymph.
The female German cockroach carries the egg capsule protruding from her rear until the eggs are ready to hatch. The German cockroach is the only house-infesting species that carries the eggs capsule this long. This is what makes it the most presistant cockroach in the United States because they are less likely to be taken by predators.
German cockroaches usually hide in areas where there is ample food and moisture such as kitchens and other food areas but they can be found in other areas if they are stressed and as a result of a repellant insecticide somewhere else in the building or home. German cockroaches are attracted to fermented foods and beverage residues. If water is present, adults can live about a month without food, but young nymphs will die of starvation within 10 days. Without food or water the adults will die in about 2 weeks.